Chapter 1: Introduction To C Language

CHAPTER 1 INTRODUCTION TO C LANGUAGE What is C language? C Language is a general-purpose programming language created by Dennis Ritchie in 1972 at AT & T'S Bell Telephone Laboratories. Dennis Ritchie wanted to build an operating system called Unix Operating System, Dennis Ritchie had developed C language to make it. The special thing is that with the help of C language we can do low level programming. Due to this feature, C programming language is used to create system software like – Operating system, Device Driver, Compiler etc. In C Language, the basic features of all other programming languages are covered (eg – Variable, Data Types, Array, String, Function, Structure, Pointer, Loop etc.) due to which C language is called Mother Language of all other programming languages. | Once you learn C language, you can learn all other programming languages very easily. What is the history of C language? Before becoming C Language, in 1966, a person named Martin Richard made a programming language named BCPL by combining the basic features of all the programming languages of that time in AT & T'S Bell Telephone Laboratories, US, whose full name is Basic Combine Programming Language | BCPL was not suitable for making large software, as well as coding was done in Low Level style. Ken Thompson, who worked with Martin Richard at AT & T'S Bell Telephone Laboratories, created B Language in 1969 by improving the BCPL language. Actually Ken Thompson wanted to make an operating system which needed a good programming language to make it and that language was B Language. After making B language, he made Unix Operating System. Dennis Ritchie also used to work in AT & T'S Bell Telephone Laboratories, who created C Language in 1972 and told Ken Thompson, "If we make Unix Operating System with the help of C Language, we can add more features to it." In which the biggest feature was to be portable of the operating system. Features of C Language Following are the features of C language -: C is a simple and easy programming language. In C language, there are Command/Instructions like English, which is very easy for a programmer to read, understand, code. C is a Procedure Oriented Programming Language. C is very powerful and case sensitive programming language. C Language is Compiler based, dynamic programming language. C Language is a middle level language due to which both low level and high level programming can be done. The C language is the most widely used programming language for operating system and embedded system development. C language is very portable and powerful programming language. C language is a syntax based language. C is a general purpose programming language that covers the basic features of all other languages. Here I have told the features of C language, but it may be that some of you have not understood about some things like – what is Case Sensitive programming language, what is Syntax Based Language etc. Read this to know better ? Features of C Language In this I have understood all the features of C language very well. Why is C so important? If you are a college student then you must learn C language because C language proves to be very helpful in your campus requirement process. Also, if you have not learned any programming language yet, then you can start with C language because C language covers the basic features of all other languages, so that you can learn any programming language very easily. | If C language is your first programming language, then believe me, you will understand programming very well because C language proves to be very helpful in building our programming skills, as well as C language teaches us to think and understand logic. C Language is a very old and popular programming language. C language has made its place in the hearts of programmers for the last 50 years, the reason is that C language is very fast, in which programming up to the machine level (Low Level) can be done very easily. There are many such software in our daily life which are made in C language, which we are using but we do not even know in which language this software is made. You can make some similar software by learning C language, let us know about some applications made from C language -: Oracle and MySql is a software for database management which is made in C language. Almost all Device drivers are made in C language (Device driver is the tool through which the content of your pen drive is read.) Today's hot technology Android's Core library is also written in C language. All the operating systems of today's time are also made in C language like - Unix Operating System. Many parts of Web Browser are also written in C Language. So these were some such software which were made using C language. You can make many other types of software with the help of C language, so let us know what other types of software we can make with C language. C Language Applications If you are learning a programming language and you do not know what you can make by learning that language, then you will not be able to do anything by learning that language, in such a situation, you should know what you can do by learning that language. What are you going to do, so let's know what you can make with C language. You can make a good Operating System with C Language like- Window, Linux, Mac because the major part of this operating system is written in C language. With C Language, you can make Compiler which converts programming language into machine language. With this you can make Text Editor. Can create Utility Software. Can create software with Database Management like – Oracle, Mysql etc. Device driver can be created. Hello World Program Using C language #include #include void main() { printf("Hello World"); return(0): } Some Interesting Facts about C Language C language was not called C in the beginning. It evolves from ALGO. Evolution of C language: ALGO -> BCPL -> B -> Traditional C -> K & R C -> ANSI C -> ANSI / ISO C -> C99 -> C11 -> C18. C is the only programming language that has existed for the longest time in computer programming history. C is a very powerful programming language which has both high level and low level features. C language is seen as the first high-level language in computer programming. The kernel of the most popular operating system Linux is also written in C language. FAQ -: Frequently Asked Questions Q1. Should I learn C language in 2022? Yes, you should absolutely learn C language in 2022-23 because C language makes your programming basics stronger so that if you learn any other programming language further, you can learn it very easily. Q2. Which are the best books to learn C language? If you want to take a book for C language, then you can take Yashawant Kanetkar's Book Let Us C or S.K. You can take Srivastava's Book C in Depth, both these books are very good. Q3. Can I learn C language in a month? Yes absolutely, you can learn C language very easily in a month, in this one month you clear the basics of C language, then you can go for Advance. Q4. Which is the best C language IDE / compiler for Windows? If your system is of 32 bit then you can use Turbo C/C++ and if your system is of 64 bit then you can use Code Blocks. Q5. Why is it named C? This programming language was named C because many of its ideas and principles were taken from the previous programming language named B.